Sarracenia purpurea
 
Pitcherplant

Sepal Adaxial View

Greenbush Bog, 20 km West of Hudson Bay, SK on Highway #3
16-June-2016

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Sarraceniaceae: Answers to key questions in Budd's Flora leading to this family. 
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plants with leaves; NOT [succulent, spiny plants with leaves absent or scale-like, inconspicuous]

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leaves all basal

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leaves tubular with lid-like lobe on top; NOT [leaves flat with glandular tentacles]

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plants with solitary flowers; NOT [plants with flowers in racemes]

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flowers with two floral rings

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each  petal distinct from the others